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[75.189.128.87]) by smtp.gmail.com with ESMTPSA id n19sm5697731qtn.35.2017.03.09.20.34.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 09 Mar 2017 20:34:25 -0800 (PST) From: Sean Paul To: linux-rockchip@lists.infradead.org, dri-devel@lists.freedesktop.org Subject: [PATCH 05/41] drm/bridge: analogix_dp: set psr activate/deactivate when enable/disable bridge Date: Thu, 9 Mar 2017 23:32:20 -0500 Message-Id: <20170310043305.17216-6-seanpaul@chromium.org> X-Mailer: git-send-email 2.12.0.246.ga2ecc84866-goog In-Reply-To: <20170310043305.17216-1-seanpaul@chromium.org> References: <20170310043305.17216-1-seanpaul@chromium.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170309_203447_118704_6879DDCE X-CRM114-Status: GOOD ( 15.02 ) X-Spam-Score: -2.7 (--) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400d:c09:0:0:0:22e listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: zain wang , Heiko Stuebner , David Airlie , Sean Paul , =?UTF-8?q?St=C3=A9phane=20Marchesin?= , Caesar Wang , linux-arm-kernel@lists.infradead.org, Mark Yao Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org From: zain wang There's a race between when bridge_disable and when vop_crtc_disable are called. If the flush timer triggers a new psr work between these, we will operate eDP without power shutdowned by bridge_disable. In this case, moving activate/deactivate to enable/disable bridge to avoid it. Cc: Stéphane Marchesin Signed-off-by: zain wang Signed-off-by: Caesar Wang Signed-off-by: Sean Paul --- drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 7 +++++- drivers/gpu/drm/rockchip/rockchip_drm_psr.c | 30 ++++++++++++++++++++----- drivers/gpu/drm/rockchip/rockchip_drm_psr.h | 4 ++-- drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 4 ---- 4 files changed, 32 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c index 8548e8271639..28c0d4406454 100644 --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -159,12 +159,17 @@ static int rockchip_dp_poweron(struct analogix_dp_plat_data *plat_data) return ret; } - return 0; + return rockchip_drm_psr_activate(&dp->encoder); } static int rockchip_dp_powerdown(struct analogix_dp_plat_data *plat_data) { struct rockchip_dp_device *dp = to_dp(plat_data); + int ret; + + ret = rockchip_drm_psr_deactivate(&dp->encoder); + if (ret != 0) + return ret; clk_disable_unprepare(dp->pclk); diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c index a553e182ff53..4c379e90b178 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.c @@ -57,6 +57,24 @@ static struct psr_drv *find_psr_by_crtc(struct drm_crtc *crtc) return psr; } +static struct psr_drv *find_psr_by_encoder(struct drm_encoder *encoder) +{ + struct rockchip_drm_private *drm_drv = encoder->dev->dev_private; + struct psr_drv *psr; + unsigned long flags; + + spin_lock_irqsave(&drm_drv->psr_list_lock, flags); + list_for_each_entry(psr, &drm_drv->psr_list, list) { + if (psr->encoder == encoder) + goto out; + } + psr = ERR_PTR(-ENODEV); + +out: + spin_unlock_irqrestore(&drm_drv->psr_list_lock, flags); + return psr; +} + static void psr_set_state_locked(struct psr_drv *psr, enum psr_state state) { /* @@ -115,14 +133,14 @@ static void psr_flush_handler(unsigned long data) /** * rockchip_drm_psr_activate - activate PSR on the given pipe - * @crtc: CRTC to obtain the PSR encoder + * @encoder: encoder to obtain the PSR encoder * * Returns: * Zero on success, negative errno on failure. */ -int rockchip_drm_psr_activate(struct drm_crtc *crtc) +int rockchip_drm_psr_activate(struct drm_encoder *encoder) { - struct psr_drv *psr = find_psr_by_crtc(crtc); + struct psr_drv *psr = find_psr_by_encoder(encoder); unsigned long flags; if (IS_ERR(psr)) @@ -138,14 +156,14 @@ EXPORT_SYMBOL(rockchip_drm_psr_activate); /** * rockchip_drm_psr_deactivate - deactivate PSR on the given pipe - * @crtc: CRTC to obtain the PSR encoder + * @encoder: encoder to obtain the PSR encoder * * Returns: * Zero on success, negative errno on failure. */ -int rockchip_drm_psr_deactivate(struct drm_crtc *crtc) +int rockchip_drm_psr_deactivate(struct drm_encoder *encoder) { - struct psr_drv *psr = find_psr_by_crtc(crtc); + struct psr_drv *psr = find_psr_by_encoder(encoder); unsigned long flags; if (IS_ERR(psr)) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h index b420cf1bf902..b1ea0155e57c 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_psr.h +++ b/drivers/gpu/drm/rockchip/rockchip_drm_psr.h @@ -18,8 +18,8 @@ void rockchip_drm_psr_flush_all(struct drm_device *dev); int rockchip_drm_psr_flush(struct drm_crtc *crtc); -int rockchip_drm_psr_activate(struct drm_crtc *crtc); -int rockchip_drm_psr_deactivate(struct drm_crtc *crtc); +int rockchip_drm_psr_activate(struct drm_encoder *encoder); +int rockchip_drm_psr_deactivate(struct drm_encoder *encoder); int rockchip_drm_psr_register(struct drm_encoder *encoder, void (*psr_set)(struct drm_encoder *, bool enable)); diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index 0539afb6b7c8..1c1e8535ad28 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -568,8 +568,6 @@ static void vop_crtc_disable(struct drm_crtc *crtc) WARN_ON(vop->event); - rockchip_drm_psr_deactivate(&vop->crtc); - /* * We need to make sure that all windows are disabled before we * disable that crtc. Otherwise we might try to scan from a destroyed @@ -981,8 +979,6 @@ static void vop_crtc_enable(struct drm_crtc *crtc) clk_set_rate(vop->dclk, adjusted_mode->clock * 1000); VOP_CTRL_SET(vop, standby, 0); - - rockchip_drm_psr_activate(&vop->crtc); } static bool vop_fs_irq_is_pending(struct vop *vop)